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Sumac (Rhus spp.) is a tannin-rich natural dye and mordant source prized for its dual role in dyeing. It yields soft greys, beige, or pink-tinted neutrals when used as a dye and builds excellent colourfastness when used as a tannin base. Made from the dried leaves and fruit of the sumac plant, this powder provides smooth, consistent coverage with a mild, earthy tone — a true cornerstone in sustainable natural dyeing.

Benefits
Sumac bridges beauty and practicality — it’s both a dye and a mordanting powerhouse. As a tannin source, it rivals gallnut and myrobalan but with a distinct soft hue that complements warm palettes. Its sustainable origin and gentle performance make it ideal for conscious dyers seeking natural alternatives to chemical mordants.

Perfect For

  • Pre-treating cellulose fibres for improved dye uptake.
  • Producing gentle neutral tones on wool or cotton.
  • Over-dyeing with logwood or indigo for muted cool tones.

Technical

  • 100% natural ground sumac leaves and fruit.
  • High tannin content for strong fibre preparation.
  • Use 10–15% WOF for mordanting or 30–50% as dye.
  • Produces soft greys, taupes, and warm beige tones.
  • Works on cotton, linen, wool, and silk.
  • Enhances brightness and durability of subsequent dyes.